51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
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/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/notifier.h>
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#include <soc/qcom/sb_notification.h>
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static BLOCKING_NOTIFIER_HEAD(sb_notifier_list);
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/**
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* sb_register_evt_listener - registers a notifier callback
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* @nb: pointer to the notifier block for the callback events
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*/
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int sb_register_evt_listener(struct notifier_block *nb)
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{
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return blocking_notifier_chain_register(&sb_notifier_list, nb);
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}
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EXPORT_SYMBOL(sb_register_evt_listener);
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/**
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* sb_unregister_evt_listener - un-registers a notifier callback
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* registered previously.
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* @nb: pointer to the notifier block for the callback events
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*/
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int sb_unregister_evt_listener(struct notifier_block *nb)
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{
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return blocking_notifier_chain_unregister(&sb_notifier_list, nb);
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}
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EXPORT_SYMBOL(sb_unregister_evt_listener);
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/**
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* sb_notifier_call_chain - send events to all registered listeners
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* as received from publishers.
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* @nb: pointer to the notifier block for the callback events
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*/
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int sb_notifier_call_chain(unsigned long val, void *v)
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{
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return blocking_notifier_call_chain(&sb_notifier_list, val, v);
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}
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EXPORT_SYMBOL(sb_notifier_call_chain);
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